Thitipun C.

I build firmware and low-level software that makes hardware actually work — reliably, in production, under real-world conditions. With 15+ years of embedded development experience, I specialize in ARM Cortex M0/M3/M4 firmware (STM32, ESP32), real-time systems on FreeRTOS, and industrial PLC software on Beckhoff/TwinCAT. I've shipped software for automated guided vehicles, robotic control systems, navigation sensors, and special machine construction — across industries including automotive, semiconductor, and medical robotics. What I typically help clients with: - Firmware development in C/C++ for STM32, ESP32, and other ARM-based MCUs - FreeRTOS task architecture, peripheral drivers (UART, SPI, I2C, CAN, DMA) - Communication protocols: CAN, MQTT, Modbus, OPC-UA, REST, Protobuf - Python tooling, test scripts, and HIL testing around embedded systems - PLC programming (IEC 61131-3) on Beckhoff/TwinCAT2/TwinCAT3 - Gateway development bridging robots, PLCs, AI servers, and external systems I work well on small, well-scoped projects — I give clear time and cost estimates upfront, communicate proactively, and deliver clean, documented code. Based in Germany (CET), available for async or scheduled calls.